From d0cff2367a6e25143af50db4df99b623411a613b Mon Sep 17 00:00:00 2001
From: Jake Dallimore <jake@moodle.com>
Date: Mon, 5 Aug 2019 09:25:02 +0800
Subject: [PATCH] MDL-66147 mod_assign: external get_participant supports
 relative dates

---
 mod/assign/externallib.php            |  8 ++--
 mod/assign/tests/externallib_test.php | 60 +++++++++++++++++++++++++++
 2 files changed, 64 insertions(+), 4 deletions(-)

diff --git a/mod/assign/externallib.php b/mod/assign/externallib.php
index b7325e2afbd..2da9021b80d 100644
--- a/mod/assign/externallib.php
+++ b/mod/assign/externallib.php
@@ -2821,10 +2821,10 @@ class mod_assign_external extends external_api {
             'requiregrading' => $participant->requiregrading,
             'grantedextension' => $participant->grantedextension,
             'blindmarking' => $assign->is_blind_marking(),
-            'allowsubmissionsfromdate' => $assign->get_instance()->allowsubmissionsfromdate,
-            'duedate' => $assign->get_instance()->duedate,
-            'cutoffdate' => $assign->get_instance()->cutoffdate,
-            'duedatestr' => userdate($assign->get_instance()->duedate, get_string('strftimedatetime', 'langconfig')),
+            'allowsubmissionsfromdate' => $assign->get_instance($userid)->allowsubmissionsfromdate,
+            'duedate' => $assign->get_instance($userid)->duedate,
+            'cutoffdate' => $assign->get_instance($userid)->cutoffdate,
+            'duedatestr' => userdate($assign->get_instance($userid)->duedate, get_string('strftimedatetime', 'langconfig')),
         );
 
         if (!empty($participant->groupid)) {
diff --git a/mod/assign/tests/externallib_test.php b/mod/assign/tests/externallib_test.php
index dda4e5ee019..89cd0fd16e8 100644
--- a/mod/assign/tests/externallib_test.php
+++ b/mod/assign/tests/externallib_test.php
@@ -2467,6 +2467,66 @@ class mod_assign_external_testcase extends externallib_advanced_testcase {
         $this->assertEquals($group->name, $result['groupname']);
     }
 
+    /**
+     * Test get_participant() when relative dates mode is enabled on the course.
+     *
+     * @dataProvider get_participant_relative_dates_provider
+     * @param array $courseconfig the config to use when creating the course.
+     * @param array $assignconfig the config to use when creating the assignment.
+     * @param array $enrolconfig the enrolement to create.
+     * @param array $expectedproperties array of expected assign properties.
+     */
+    public function test_get_participant_relative_dates(array $courseconfig, array $assignconfig, array $enrolconfig,
+            array $expectedproperties) {
+        $this->resetAfterTest();
+
+        set_config('enablecourserelativedates', true); // Enable relative dates at site level.
+
+        $course = $this->getDataGenerator()->create_course($courseconfig);
+        $generator = $this->getDataGenerator()->get_plugin_generator('mod_assign');
+        $assignconfig['course'] = $course->id;
+        $instance = $generator->create_instance($assignconfig);
+        $cm = get_coursemodule_from_instance('assign', $instance->id);
+        $context = context_module::instance($cm->id);
+        $assign = new assign($context, $cm, $course);
+
+        $user = $this->getDataGenerator()->create_and_enrol($course, ...array_values($enrolconfig));
+
+        $teacher = $this->getDataGenerator()->create_and_enrol($course, 'teacher', null, 'manual', time() - 50 * DAYSECS);
+
+        $this->setUser($teacher);
+        $result = mod_assign_external::get_participant($assign->get_instance()->id, $user->id, false);
+        $result = external_api::clean_returnvalue(mod_assign_external::get_participant_returns(), $result);
+
+        foreach ($expectedproperties as $propertyname => $propertyval) {
+            $this->assertEquals($propertyval, $result[$propertyname]);
+        }
+    }
+
+    /**
+     * The test_get_participant_relative_dates data provider.
+     */
+    public function get_participant_relative_dates_provider() {
+        $timenow = time();
+
+        return [
+            'Student whose enrolment starts after the course start date, relative dates mode enabled' => [
+                'courseconfig' => ['relativedatesmode' => true, 'startdate' => $timenow - 10 * DAYSECS],
+                'assignconfig' => ['duedate' => $timenow + 4 * DAYSECS],
+                'enrolconfig' => ['shortname' => 'student', 'userparams' => null, 'method' => 'manual',
+                    'startdate' => $timenow - 8 * DAYSECS],
+                'expectedproperties' => ['duedate' => $timenow + 6 * DAYSECS]
+            ],
+            'Student whose enrolment starts before the course start date, relative dates mode enabled' => [
+                'courseconfig' => ['relativedatesmode' => true, 'startdate' => $timenow - 10 * DAYSECS],
+                'assignconfig' => ['duedate' => $timenow + 4 * DAYSECS],
+                'enrolconfig' => ['shortname' => 'student', 'userparams' => null, 'method' => 'manual',
+                    'startdate' => $timenow - 12 * DAYSECS],
+                'expectedproperties' => ['duedate' => $timenow + 4 * DAYSECS]
+            ],
+        ];
+    }
+
     /**
      * Test for mod_assign_external::list_participants().
      *
-- 
2.17.1